Alpine installer will not boot with a static IP on interface index other than 0

[richardstephens]

[yes]: This bug persists when memory is increased beyond 8GB.

Describe the bug

When netboot passes static IP configuration to Alpine, the interface index appears to be hardcoded to eth0, even if a different interface was selected.

To Reproduce

1. Set-up a multi-NIC system with the first NIC disconnected, and the second requiring DHCP
2. Boot netboot and enter IP configuration
3. Select Alpine (3.21) installer

Libvirt VM config
libvirt-domain-netboot.txt
libvirt-network-netboot.txt

Expected behavior

Alpine installer image should boot normally. Instead it boots to the recovery shell

Screenshots

Additional context

Reproduced on both a physical system and a VM, and with both BIOS and UEFI booting.

Issue only occurs if DHCP is not available.

I have not tested a wide range of images to see if others are affected, but Debian appears to work fine with the same setup.